This measuring system is specially designed to solve the diameter and distance of exit pupil of the gun optical sighting for some factory.

本测试系统是为解决某单位枪用光学瞄具出瞳直径、出瞳距离的测试而研制的。

youdao

Its Mount Seymour Provincial Park - just moments from the city centre - provides more than a dozen popular hiking trails and the possibility of sighting (preferably from a good distance) a bear or cougar.

BBC: Vancouver: Land of the lotus-eaters